Not surprising, most of us spend most of our time indoors. Most of us aren’t farmers or construction workers. We are the indoor generation. The EPA’s National Human Activity Pattern Survey (NHAPS) conducted 1992-1994 found that Americans spend about 87% of their time in enclosed buildings and about 6% of their time in enclosed vehicles.
A May 2018 global study funded by Velux1 found that people, including those in the U.S., believe they spend around two-thirds of their time indoors. The study found most people may spend as little as 15 minutes outdoors each day; with one in six people practically never going outside.